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240 ÷ 8 × 512 ÷ 4 + ½ of {1800 ÷ (11 × 24 ÷ 8 × 3 – 69) × 2}

3841
3855
3441
3900
Explanation:

240 ÷ 8 × 512 ÷ 4 + ½ of {1800 ÷ (11 × 24 ÷ 8 × 3 – 69) × 2}
= 240 ÷ 8 × 512 ÷ 4 + ½ of {1800 ÷ (264 ÷ 8 × 3 – 69) × 2}
= 240 ÷ 8 × 512 ÷ 4 + ½ of {1800 ÷ (33 × 3 – 69) × 2}
= 240 ÷ 8 × 512 ÷ 4 + ½ of {1800 ÷ (99 – 69) × 2}
= 240 ÷ 8 × 512 ÷ 4 + ½ of {1800 ÷ 30 x 2}
= 240 ÷ 8 × 512 ÷ 4 + ½ of {60 x 2}
= 240 ÷ 8 × 512 ÷ 4 + ½ of 120
= 240 ÷ 8 × 512 ÷ 4 + ½ × 120
= 240 ÷ 8 × 512 ÷ 4 + 60
= 30 × 512 ÷ 4 + 60
= 15360 ÷ 4 + 60
= 3840 + 60
= 3900


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